What Is the Most Likely Diagnosis for the Patient

a Pregnant Woman, 26, from a Low Socioeconomic Background, Experiences Persistent Fatigue, Weight Loss and Muscle Weakness during Her Second Trimester. She Notices Increased Pigmentation of Her Skin, Particularly in Sun-exposed Areas. Despite Taking Rest, Her Symptoms Worsen, Affecting Her Ability to Work and Care for Her Family. Concerned about Her Health and the Well-being of Her Unborn Child and She Seeks Medical Assistance